Once stretched to lead to flow hole import.doc

Once stretched to lead to flow hole import, this was subjected to restriction on the geography, as a result not adoption.But the concrete gravity type round an embankment,Have a stability, anti- to hurtle an etc. advantage, so round embankment choice the concrete gravity type structure in this upper stream that leads to flow engineering.7.3.2Round an embankment design1.the upper stream concrete round embankment embankment body Gao Chengs draw-upThe design of rounding the embankment blocks amount of water current Q=2120 ms 3| ses, correspond the water level as EL96.5 m, choose concrete to round an embankment embankment crestGao Cheng is an EL96.5 m, another take over to visit a side to use a hemp pack a heap to build a high 1 m in the embankment of defend a wave wall.2.round embankment design parameter choiceThe geology data that provides according to the tender document, the embankment address area is a biotite to spend a Gang stone, reference relevant data, first stepDrafting the physical mechanics property index sign of radicle rock is:The concrete is:f=0.95 C=12kg|cm2The concrete spends the anti- of Gang stone with weak morals and custom biotite to shear parameter for:f=0.65 C=0Concrete density =2.35 ts|m2Design discharge:The design of rounding the embankment blocks amount of water current Q=the 2120 ms is 3| ses, namely 103 month P=20%;The school checks discharge forQ=the 6950 ms is 3| ses, namely P=5%.3.round an embankment calculation formula and correspond safe coefficientRound an embankment design stable safe coefficient according to water conservancy water electricity construction organization design norm Article 2.2.27 with2.4.9Takes a value, anti- clipping safe coefficient K2 3, allow to pull in response to the dint: =-0.1-0.15 MPas.While designing dischargeThe anti- slips a stability: K=f W+CA| P=8.43 safetyBase in response to the dint: =N|B(1 6 es|B)=5.1 kgs|cm 20.5kg|cm2When school checked dischargeThe anti- slips a stability: K=f W+CA| P=133 safetyBase in response to the dint: =N|B(1 6 es|B)=6.9 kgs|cm 2-0.5kg|cm2BE allowing scope inside.The school checks discharge Q=6950 ms 3| ses, embankment crest over flow Tai complicated, draw up at in the mark juniors go model experiment, againCarry on checking to calculate.4.round embankment decoration and structureUpper streams rounding an embankment decoration is on-line to visit about the 60 m in the dam stalk, its position BE:dam ascend 0+76, dam right 0+110 go to damAscend 0+60, dam right 0+198.The embankment body presses concrete structure for the gravity type Nian, embankment crest EL96.5, tingle a pack to defend a wave wall crest EL97.5 m.Embankment crest breadth5 ms, the embankment crest is long about the 90 ms, the biggest embankment high 28.5 ms, the biggest bottom breadth 20.125 ms.Face surface perpendicular, back surface is one 0.55, the embankment body radicle rock noodles goes to EL77 the ms sprinkle to build abnormal concrete and connect place with cross-straits hillside to spread to build 1 m or so normalConcrete.The foundation requests to be located the noodles is at the weak morals and custom rock up.The concrete engineering measures for the 15017 ms 3, among them EL77 mFollowing normal concrete 3310 ms 3.5.top and bottom the traveller round an embankment designEmbankment crest Gao Chengs draw-up:Analyze a calculation according to a period of 10 days average discharge data, each a period of 10 days getting for 89 months flows on the averageMeasure frequency to see table 7-3.Table 7-3 eight, in September a period of 10 days average discharge formAugust time SeptemberDischargeIn the frequency bottom top medium bottomP=20% 308 310 325 236According to starting construction total progress arrangement, the piece flows and corresponds piece to flow the discharge as Q on September 10, 1998=the 325 ms is 3| ses,Correspond the water level as EL76.5 m, the choice cuts to flow the Chuang dike as EL77 ms.In consideration of October three years a meet flood dischargeQ=the 620 ms is 3| ses, making selection a traveller to round an embankment Gao Cheng is an EL80.5 m.The Jian dike engineering is a 2168 ms 3.The green river reservoir of the cotton pool dam address downstream normal water level is an EL73.6 m, making selection the downstream son embankment embankment a crest Gao Cheng BEEL74 m.6.the structure form of the top and bottom travellers embankmentUp, downstream son the embankment all adopt a ground to round an embankment and face a surface to use to glue an inclined wall of soil to defend to ooze, the slope is one 2, back surfaceFor one 1.5.Last the traveller round an embankment embankment crest Gao Cheng is an EL80.5 m, crest the breadth 6 ms, embankment crest length about 40 ms.Descend a traveller to round an embankment embankment crest Gao Cheng is an EL74 m, crest the breadth 6 ms, embankment crest length about 38 ms.Up and down the traveller the embankment stalk line position sees table 7-4.Table 7-4 top and bottom traveller the embankment stalk line position formC D E FDam ascend 0+1160+s 106Dam right 0+1500+s 1880+s 1160+s 162Dam descend 0+3040+s 300Last the traveller round an embankment ground the engineering measure for the 5153 ms 3, descend a traveller to round an embankment ground the engineering measure for the 1387 ms 3.7.4Round an embankment constructionUp and down visit to round the embankment amount of engineering:the concrete 17385 ms 3, the ground square fills to build engineering to measure a 6540 ms 3, op